D300 built-in flash, Part 1: Blinding speed

Started Dec 25, 2008 | Discussions thread
Kluso Senior Member • Posts: 1,904
It was clipped - you just cant see it

David314 wrote:

Marianne Oelund wrote:

If you want to see the true peak characteristic of the flash output,
you need to place your detector a bit farther away from the flash, as
it's clipped the signal.

no it wasn't clipped by the measurement - it was turned off by the
flash unit - full power same setup just 1/60 instead of 1/250

I tried in vain to tell you it was saturated 4 months ago, see here

http://forums.dpreview.com/forums/read.asp?forum=1034&message=29422415

The point you are missing is that you are using a device with an analog output with gain over which you have no control.

You dont even know what the schematic of the internal circuit is - you are NOT seeing the true peak characteristic of the flash output -

See how the OP's traces are not flat ever at the top.

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Inspector Kluso

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